Method and apparatus for carbonylating methanol with acetic acid enriched flash stream
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United States of America Patent
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Dec 31, 2019
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Feb 28, 2019
app pub date -
Oct 25, 2018
filing date -
Apr 29, 2008
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Abstract
A carbonylation process for producing acetic acid including: (a) carbonylating methanol or its reactive derivatives in the presence of a Group VIII metal catalyst and methyl iodide promoter to produce a liquid reaction mixture including acetic acid, water, methyl acetate and methyl iodide; (b) feeding the liquid reaction mixture at a feed temperature to a flash vessel which is maintained at a reduced pressure; (c) flashing the reaction mixture to produce a crude product vapor stream.
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